Blind Thread Standoffs
Thread Code
Rec Min. Sheet Thickness
C
-.005
H
Nom.
Hole size In Sheet
+.003
440
.040
.165
.187
.166
6440
.040
.212
.250
.213
632
.040
.212
.250
.213
8632
.050
.280
.312
.281
832
.050
.280
.312
.281
032
.050
.280
.312
.281
Thread Code
Rec Min. Sheet Thickness
C
-0.13
H
Nom.
Hole size In Sheet
+0.08
M2.5
1.02
4.20
4.75
4.22
M3
1.02
4.20
4.75
4.22
3.5M3
1.02
5.39
6.35
5.41
M3.5
1.02
5.39
6.35
5.41
M4
1.27
5.98
7.00
6.00
3.5M4
1.27
7.12
8.00
7.14
M5
1.27
7.12
8.00
7.14
M6
1.30
8.72
10.00
8.75
All dimensions are in inches (Size Unit: inch)
UNIFIED
Thread Size
Type
Thread Code
Length "L" +.002 -.005 (Length code is in 32ths of an inch )
Min.Dist Hole C/L To Edge
Steel
Stainless Steel
Aluminum
.312
.375
.437
.500
.562
.625
.687
.750
.812
.875
.937
1.00
1.062
.112-40(#4-40)
BSO
BSOS
BSOA
440
10
12
14
16
18
20
22
24
26
28
30
32
34
.23
6440
.138-32(#6-32)
BSO
BSOS
BSOA
632
10
12
14
16
18
20
22
24
26
28
30
32
34
.27
8632
.164-32(#8-32)
BSO
BSOS
BSOA
832
10
12
14
16
18
20
22
24
26
28
30
32
34
.31
.190-32(#10-32)
BSO
BSOS
BSOA
032
10
12
14
16
18
20
22
24
26
28
30
32
34
.31
F Dimension Min.
.156
.187
.250
.375
All dimensions are in millimeters (Size Unit: mm)
METRIC
Thread Size
Type
Thread Code
Length "L" +0.05 -0.13 (Length Code is in millimeters )
Min.Dist Hole C/L To Edge
Steel
Stainless Steel
Aluminum
M2.5X0.45
BSO
BSOS
BSOA
M2.5
6
8
10
12
14
16
18
20
22
25
/
/
/
6
M3X0.5
BSO
BSOS
BSOA
M3
6
8
10
12
14
16
18
20
22
25
/
/
/
6
3.5M3
6.8
M3.5X0.6
BSO
BSOS
BSOA
M3.5
6
8
10
12
14
16
18
20
22
25
/
/
/
6.8
M4X0.7
BSO
BSOS
BSOA
M4
6
8
10
12
14
16
18
20
22
25
/
/
/
7.5
3.5M4
8
M5X0.8
BSO
BSOS
BSOA
M5
6
8
10
12
14
16
18
20
22
25
/
/
/
8
M6X1.0
BSO
BSOS
BSOA
M6
6
8
10
12
14
16
18
20
22
25
/
/
/
9
F Dimension Min.
3.2
4
5
6.5
9.5